/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

body {
    background: #f4f7fb;
    color: #333;
    line-height: 1.6;
    font-size: 16px;
    padding: 20px;
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部 */
.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 36px;
    font-weight: 700;
    color: #1a73e8;
    background: linear-gradient(45deg, #ff9a8b, #ff6a88, #d0a6f0, #4fd4ff, #ff6c70);
    -webkit-background-clip: text;
    color: transparent;
}

.header p {
    font-size: 18px;
    color: #555;
}

/* 卡片样式 */
.card {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

/* 表格样式 */
.table th, .table td {
    vertical-align: middle;
}

/* 页脚 */
footer {
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
    color: #777;
}

footer p {
    font-weight: 400;
}

footer p a {
    color: #1a73e8;
    text-decoration: none;
}

/* 模态窗口样式 */
.modal-content {
    border-radius: 8px;
}

.modal-header {
    background: #f4f7fb;
    border-bottom: none;
}

.modal-title {
    color: #333;
}

.btn-primary {
    background: #1a73e8;
    border: none;
}

.btn-primary:hover {
    background: #4d93ed;
}

.btn-secondary {
    background-color: #ccc;
    border: none;
}

.btn-secondary:hover {
    background-color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header h1 {
        font-size: 28px;
    }

    .header p {
        font-size: 16px;
    }
}
